Powered toothbrush bristle pattern



FIG. 1 is a front elevation view of the power toothbrush bristle pattern of my new design;

FIG. 2 is a left side elevation view thereof, the right side being a mirror image;

FIG. 3 is a top view thereof; and,

FIG. 4 is a front perspective view thereof, as seen from the bottom left side.

The power toothbrush neck and head are shown in broken lines for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a powered toothbrush bristle pattern, as shown and described. 